Finding the Fourth Proportional to 20,723,727.80, 31,085,591.70 and 13,165,455.80
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Solution
The fourth proportional to 20,723,727.80, 31,085,591.70 and 13,165,455.80 is: 19,748,183.70
Step by Step Solution
- Step 1: Write the proportion equation
20,723,727.80 : 31,085,591.70 = 13,165,455.80 : x - Step 2: Convert to fraction form
20,723,727.80/31,085,591.70 = 13,165,455.80/x - Step 3: Cross multiply
20,723,727.80x = 31,085,591.70 × 13,165,455.80 - Step 4: Simplify right side
20,723,727.80x = 409,255,983,543,196.88 - Step 5: Solve for x
x = 409,255,983,543,196.88/20,723,727.80 - Step 6: Final answer
x = 19,748,183.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.